[nijave]

The difference with "primed" hot water is pretty crazy for something that seems trivial. I've also found opening the door and jiggling the racks during the drying cycle also makes a pretty big difference (assuming you catch it at the right time--and use heated dry)

[michael1999]

Some vinegar in the dispenser will fix the spots.

[dreamcompiler]

Or a half teaspoon of citric acid powder.

[Red_Leaves_Flyy]

Hope you enjoy replacing seals

[egberts1]

Oooh, ouch. Yeah, in an industrial setting (PCB, the printed circuit board, not the oil-based ones found in end-feeder poled step-down transformer).

Citrus acid does "WONDER" in shorten lifespan of rubber/plastic seals.